组织蛋白酶D与基质金属蛋白酶-9在口腔鳞癌的表达

目的 探讨组织蛋白酶D(CD)与基质金属蛋白酶-9(MMP-9)在人类口腔鳞癌(OSCC)中的表达意义. 方法 采用免疫组织化学SP法检测76例OSCC组织与20例癌旁正常口腔黏膜的CD与MMP-9水平. 结果 CD和MMP-9在OSCC中的阳性表达率分别为81.6%和77.6%,显著高于癌旁正常口腔黏膜(P＜0.01).两者均与OSCC浸润深度和淋巴结转移密切相关,浸润越深,其表达越强(P＜0.05);有淋巴结转移的病例,其阳性率明显高于无转移者(P＜0.05);MMP-9表达还与组织分化程度密切相关,分化程度越低,其表达越强(P＜0.05).OSCC组织中CD和MMP-9表达具有一定的一致性. 结论 CD和MMP-9的阳性表达与OSCC的侵袭转移有关.     

HPA蛋白的表达与食管鳞癌血管生成、浸润、转移的关系

目的 探讨HPA蛋白在食管鳞癌中的表达及其与食管鳞癌血管生成、浸润、转移的关系.方法 应用免疫组化法(Immunohistochmeistry,IHC)检测70例食管鳞癌组织和23例切缘正常组织中HPA、CD34蛋白的表达.结果 癌组织中HPA蛋白的表达(65.7%)显著高于切缘正常组织(0.0%)(P＜0.05).有淋巴结转移的食管鳞癌组织中HPA蛋白的阳性表达率90.9%(30/33)高于无淋巴结转移组43.2%(16/37)(P＜0.05);有纤维膜浸润的食管鳞癌组织中HPA蛋白的阳性表达率92.9%(39/42)高于无纤维膜浸润组25.0%(7/28)(P＜0.05).HPA蛋白阳性表达的食管鳞癌组织中的微血管密度(Mean Miciovessel Density,MVD)值(44.85±12.74)显著高于HPA蛋白阴性者的MVD值(33.05±7.32)(P＜0.05).结论 HPA蛋白阳性表达与食管鳞癌的发生、血管生成、浸润深度、淋巴结转移有关.     

大肠癌中MMP-7和MVD的表达及其与肿瘤转移的相关性

目的:探讨基质溶解素(MMP-7),微血管密度(MVD)与大肠癌临床病理的关系及其在肿瘤浸润转移中的作用.方法:应用免疫组织化学(SP)方法检测大肠癌组织55例、正常大肠黏膜组织(对照组)20例中MMP-7和MVD的表达情况.结果:大肠癌及对照组MMP-7的表达分别为67.3%和30.0%(P＜0.05). MVD在大肠癌及对照组的表达分别为41.32±6.39, 24.17±6.23(P＜0.05). 临床Dukes分期中,A,B期组MMP-7阳性表达率为65.85%,C, D期组为92.86%(P＜0.05);同时,A,B期组MVD阳性表达为35.22±7.37,C, D期组为43.67±4.34(P＜0.05). MMP-7阳性大肠癌组织MVD显著高于MMP-7阴性大肠癌MVD(P＜0.05).结论:大肠癌MMP-7, MVD均呈高表达,二者具有相互促进作用即MMP-7能促进结肠癌血管生成从而使血行转移速度加快;MMP-7, MVD将有可能成为临床新指标检测结肠癌高危人群.     

食管鳞癌组织中乏氧诱导因子-1α、血管内皮生长因子及微血管密度测定

目的:探讨食管鳞癌组织中乏氧诱导因子(HIF-1α的表达与血管生成的关系.方法:采用免疫组织化学SP技术检测46例食管鳞癌及26例癌旁正常组织中HIF-1α、血管内皮细胞生长因子(VEGF蛋白的表达,用CD34抗体标记肿瘤组织血管内皮细胞,计算微血管密度(MVD).结果:食管鳞癌组织中HIF-1α、VEGF的阳性率分别为41.31%(19/46)、58.70%(27/46),MVD为46.12±7.64;均高于癌旁正常组织(P＜0.05).HIF-1α、VEGF的表达与食管鳞癌组织学分级和TNM分期无关(P＞0.05),与淋巴结转移及浸润深度有关(P＜0.05).食管鳞癌组织中HIF-1α的表达与VEGF表达及MVD均呈正相关(P＜0.05).结论:HIF-1α与食管癌新生血管形成有关.     

血管生成素-2及其受体在人口腔鳞癌的表达及意义

目的探讨血管生成素-2(angoipoietin-2,Ang-2)及其受体(Tie-2)在人口腔鳞癌的表达水平及其在口腔鳞癌血管生成中的作用.方法采用免疫组化SABC法,检测34例口腔鳞癌组织及16例正常口腔黏膜组织中Ang-2及其受体Tie-2、CD34的表达.结果Ang-2在口腔鳞癌的表达明显高于正常口腔黏膜(P＜0.05),且Ang-2的表达随口腔鳞癌分级的增加而逐渐增强,Ⅲ级＞Ⅱ级＞Ⅰ级且差异具显著性(P＜0.05).Tie-2及CD34在口腔鳞癌的表达明显高于正常口腔黏膜(P＜0.05).但随口腔鳞癌病理分级的升高,Tie-2、CD34虽呈现递增趋势,但组间比较无显著性差异(P＞0.05).结论在口腔鳞癌中,血管生成增加,Ang-2/Tie-2可能参与口腔鳞癌血管生成的调节.     

肾细胞癌MMP-9、VEGF的表达及其临床意义

目的 探讨基质金属蛋白酶-9(MMP-9)、血管内皮细胞生长因子(VEGF)的表达与肾细胞癌血管生成及生物学特性关系.方法 应用免疫组化SP法检测78例肾癌MMP-9、VEGF的表达及微血管密度(MVD).结果 MMP-9在浸润进展期肾癌组(T3～T4)的阳性表达率为87%,明显高于局限性肾癌组(T1～T2)的50%(P＜0.01);MMP-9和VEGF同时表达阳性者,其血管密度为140.86±24.87,明显高于仅MMP-9或VEGF表达阳性的:99.3±47.97(P＜0.01),亦明显高于二者都表达阴性的:80.16±33.83(P＜0.000 1);肾癌MMP-9、VEGF的表达呈显著性正相关(r=0.409 66,P＜0.001),MMP-9、VEGF在肾癌的血管生成中有协同作用.结论 MMP-9、VEGF联合检出有助于预测肾癌侵袭和转移.     

人食管鳞癌组织中MMP-2、MMP-9和TIMP-1、TIMP-2的表达

目的:探讨人食管鳞癌组织中MMP-2、MMP-9和TIMP-1、TIMP-2的表达及其临床意义.方法:分别采用免疫组织化学和Western blot法检测41例食管鳞癌组织及相应正常食管组织中MMP-2、MMP-9和TIMP-1、TIMP-2的表达.结果:食管鳞癌组织中MMP-9阳性表达率与淋巴结转移及静脉侵袭有关(P＜0.05或0.01);鳞癌组织中MMP-9的阳性表达率(63.41%)高于正常组织的12.20%(P＜0.01);鳞癌组织中MMP-9的阳性表达率与蛋白相对表达量(3.02±0.56)均高于MMP-2(17.07%,2.26±0.51)、TIMP-1(39.02%,1.25±0.45)和TIMP-2(34.15%,1.31±0.44)(P＜0.05或0.01);鳞癌组织中MMP-9和TIMP-1的表达呈负相关(x2=29.3,P＜0.01).结论:MMP-9表达与食管鳞癌的侵袭转移有关,其机制可能与食管鳞癌组织中MMP/TIMP平衡失调有关;MMP-9与TIMP-1联合检测有助于食管鳞癌生物学行为的判断.     

口腔鳞癌中基质金属蛋白酶-2的表达及临床意义

目的 了解口腔鳞癌(OSCC)组织中基质金属蛋白酶-2(MMP-2)的表达情况,探讨其与口腔鳞癌组织浸润转移潜能及预后的关系.方法 采用免疫组化SP法检测50例口腔鳞癌组织和10例正常口腔黏膜组织中MMP-2的表达,分析其表达与临床指标的关系.结果 OSCC中MMP-2的表达显著高于正常口腔粘膜组(P<0.01),其阳性表达率分别为76%和10%,深层浸润的口腔鳞癌组织中,MMP-2的阳性表达率显著高于浅层浸润的口腔鳞癌组织(P<0.01).结论 OSCC中MMP-2的表达显著高于正常口腔黏膜组织,MMP-2的阳性表达与肿瘤浸润程度密切相关,提示MMP-2有促进肿瘤浸润转移的作用.     

乙酰肝素酶和碱性成纤维细胞生长因子在口腔鳞癌中的表达

目的: 通过实验对比口腔鳞癌(OSCC)和口腔正常黏膜中乙酰肝素酶(Hpa)、碱性成纤维细胞生长因子(Factor,bFGF)的表达和微血管密度(MVD)的关系,从而了解OSCC中Hpa在肿瘤血管生成中的作用,为OSCC的研究及其治疗提供理论依据.方法:选用正常人口腔黏膜组织10例,经手术切除及活检的OSCC标本48例,采用免疫组织化学的方法检测Hpa、bFGF的表达,用CD31抗体进行血管内皮染色,计数微血管密度,分析Hpa、bFGF在不同组织中的表达、其相互关系及二者与MVD和OSCC组织分化程度、浸润深度、淋巴结转移的关系.结果:(1)在OSCC组织中Hpa、bFGF的阳性表达分别为35例(72.92%)、38例(79.17%),均显著高于在正常口腔黏膜组织中的表达(P＜0.05);(2)Hpa表达与肿瘤的淋巴结转移和浸润深度密切相关(P＜ 0.05), bFGF蛋白表达与淋巴结转移相关(P＜0.05);(3)Hpa、bFGF阳性表达的OSCC组织中MVD显著高于阴性表达组(P＜0.05).Hpa和bFGF的表达显著相关(P＜0.001),且两者的表达都与MVD呈显著相关(P均＜0.001).结论:Hpa与bFGF在OSCC中同时表达,与血管生成密切相关,对OSCC的生长、浸润和转移有促进作用,Hpa可作为反映OSCC生物学行为的客观指标.     

MMP-2在膀胱移行细胞癌组织中表达水平与肿瘤血管形成的关系

目的 探讨MMP-2在膀胱移行细胞癌血管形成中的作用,为抑制膀胱肿瘤的血管生成疗法提供理论依据.方法 采用免疫组化法(S-P)检测48例膀胱移行细胞癌及9例正常膀胱组织中MMP-2的表达,计算机图像光密度分析,根据阳性信号面积/检测总面积的方法,以10%为阳性判断标准,计算阳性率.采用血管内皮细胞单克隆抗体CD34进行血管内皮染色,低倍镜下寻找肿瘤组织中微血管密度最密集的部位(“热区“),然后在高倍镜下计数热区内的平均微血管密度(MVD),结合临床资料及统计学处理分析以评价MMP-2在膀胱移行细胞癌血管生成中的作用.结果 48例膀胱移行细胞癌组织中,MMP-2在膀胱移行细胞癌组织中的阳性表达率为 64.6%(31/48),而9例正常膀胱组织表达阴性,两者差别有显著性(P＜0.01),MMP-2表达水平与患者的年龄、性别、肿瘤数目、直径、病理分级等无关(P＞0.05),而在病理分期之间(Tis～T1与 T2～T4)差别有显著性(P＜0.05),浸润性膀胱移行细胞癌明显高于浅表性膀胱移行细胞癌; MMP-2的表达与MVD成正相关(r=0.592,P＜0.05),随着MMP-2表达增加,MVD也增加.结论 MMP-2在膀胱移行细胞癌组织中高表达,MMP-2与MVD呈正相关,促进了膀胱移行细胞癌新生血管的形成.     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.